This research was supported by National Institute of Mental Health grant MH-73937 and the Center for Consciousness and Transformation at George Mason University to Todd B. Kashdan. We thank William Breen, Daniel Terhar, Anjali Mishra, and Kate Doherty for their assistance with the survey design and data collection for Studies 1 and 3.

Note: Corrections added on 6 January 2012 after first publication online on 19 October 2011: The page number for this article should be Page 1369–1401 (not 1067–1099), and have been corrected in the online version of this article.